High-temperature-resistant thermoplastic polyurethane foam elastomer and preparation method thereof
A thermoplastic polyurethane and elastomer technology, applied in the polymer field to achieve the effect of good mechanical properties
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Embodiment 1
[0035] In the present embodiment, the raw materials for preparing thermoplastic polyurethane foam elastomer are calculated in parts by weight:
[0036]
[0037] The mass ratio of the polypropylene oxide ether polyol to the sucrose polyether is 1:1.
[0038] The preparation method is:
[0039](1) Add the polypropylene oxide ether polyol, sucrose polyether and 1,2-propanediol of the formula into the container in sequence, and vacuumize to -0.3kPa at 95°C under stirring conditions to obtain the mixture A;
[0040] (2) After heating the hexamethylene diisocyanate of the recipe amount to 43°C, drop it into the mixture A obtained in step (1), and then add the recipe amount of nano-TiO 2 , ethanolamine, silicone oil and cyclopentane were stirred at 170°C for 2 hours to obtain mixture B;
[0041] (3) Add the compound B obtained in step (2) into a twin-screw extruder and extrude to obtain TPU granules, and then send the obtained TPU granules into a single-screw extruder to extrude...
Embodiment 2
[0044] In the present embodiment, the raw materials for preparing thermoplastic polyurethane foam elastomer are calculated in parts by weight:
[0045]
[0046] The mass ratio of the polypropylene oxide ether polyol to the sucrose polyether is 1:1.
[0047] The preparation method is:
[0048] (1) Add the polypropylene oxide ether polyol, sucrose polyether and 1,2-propanediol in the prescribed amount into the container in sequence, and vacuumize to -0.2kPa at 100°C under stirring conditions to obtain the mixture A;
[0049] (2) After heating the hexamethylene diisocyanate of the recipe amount to 45°C, drop it into the mixture A obtained in step (1), and then add the recipe amount of nano-TiO 2 , ethanolamine, silicone oil and cyclopentane were stirred at 180°C for 1 hour to obtain mixture B;
[0050] (3) Add the compound B obtained in step (2) into a twin-screw extruder and extrude to obtain TPU granules, and then send the obtained TPU granules into a single-screw extruder...
Embodiment 3
[0053] In the present embodiment, the raw materials for preparing thermoplastic polyurethane foam elastomer are calculated in parts by weight:
[0054]
[0055] The mass ratio of the polypropylene oxide ether polyol to the sucrose polyether is 1:1.
[0056] The preparation method is:
[0057] (1) Add the polypropylene oxide ether polyol, sucrose polyether and 1,2-propylene glycol in the formula quantity into the container in sequence, and vacuumize to -0.4kPa at 90°C under stirring conditions to obtain the mixture A;
[0058] (2) After heating the hexamethylene diisocyanate of the recipe amount to 40°C, drop it into the mixture A obtained in step (1), and then add the recipe amount of nano-TiO 2 , ethanolamine, silicone oil and cyclopentane were stirred at 160°C for 3 hours to obtain mixture B;
[0059] (3) Add the compound B obtained in step (2) into a twin-screw extruder and extrude to obtain TPU granules, and then send the obtained TPU granules into a single-screw extr...
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Abstract
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